The irobot xlife extended life battery delivers up to 2x the battery cycle lifetime, as compared to the irobot advanced power system battery. Compatible with roomba 500, 600, 700, & 800 series & scooba 450 robots. Irobot can only guarantee the quality & performance of authentic parts. Accessories & replacement parts manufactured by 3rd parties may have a negative impact on product performance or cause damage to your robot. Use of 3rd party replacement parts could void your robot's warranty.